Dennerle Plant Care P is a Phosphate fertilizer for demanding plant aquariums with low or no fish stocking.Dennerle Plant Care P+ Phosphate fertilizer for planted aquariums+ for the specific supply of phosphate (PO4)+ for splendid plants and intensive bright colors+ high coverage due to concentrated active ingredients+ scientifically tested and optimizedDosage & Application Dennerle Plant Care N:Dosage as needed 1 ml per 100 l of aquarium water. This dosage increases the water values as follows:Phosphate PO4: 0.125 mg/lPotassium K: 0.05 mg/l